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Derivative Financial Instruments - Schedule of Change in Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended		4 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2018
Derivative [Line Items]
Change in fair value of derivatives	$ (27)	$ (21)		$ 0	$ (21)
Net investment gains (losses)
Derivative [Line Items]
Change in fair value of derivatives	237		$ 290			$ (6)
Call options | Net investment gains (losses)
Derivative [Line Items]
Change in fair value of derivatives	257		279			12
Futures contracts | Net investment gains (losses)
Derivative [Line Items]
Change in fair value of derivatives	4		4			2
Foreign currency forward | Net investment gains (losses)
Derivative [Line Items]
Change in fair value of derivatives	0		4			0
Other embedded derivatives | Net investment gains (losses)
Derivative [Line Items]
Change in fair value of derivatives	3		3			1
Reinsurance related embedded derivatives, included in accounts payable and accrued liabilities | Net investment gains (losses)
Derivative [Line Items]
Change in fair value of derivatives	(27)		0			(21)
FIA embedded derivative
Derivative [Line Items]
Change in fair value of derivatives	$ 466		$ 355			$ 100

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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+ References

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